IPMT function

Returns the interest payment for a given period for an investment based on periodic, constant payments and a constant interest rate.



Rate     is the interest rate per period.

Per     is the period for which you want to find the interest and must be in the range 1 to nper.

Nper     is the total number of payment periods in an annuity.

Pv     is the present value, or the lump-sum amount that a series of future payments is worth right now.

Fv     is the future value, or a cash balance you want to attain after the last payment is made. If fv is omitted, it is assumed to be 0 (the future value of a loan, for example, is 0).

Type     is the number 0 or 1 and indicates when payments are due. If type is omitted, it is assumed to be 0.

Set type equal to If payments are due
0 At the end of the period
1 At the beginning of the period


  • Make sure that you are consistent about the units you use for specifying rate and nper. If you make monthly payments on a four-year loan at 12 percent annual interest, use 12%/12 for rate and 4*12 for nper. If you make annual payments on the same loan, use 12% for rate and 4 for nper.
  • For all the arguments, cash you pay out, such as deposits to savings, is represented by negative numbers; cash you receive, such as dividend checks, is represented by positive numbers.


ShowHow do I copy an example?

  • Select the example in this article.

 Important   Do not select the row or column headers.

Selecting an example from Help

Selecting an example from Help
  • Press CTRL+C.
  • In Excel, create a blank workbook or worksheet.
  • In the worksheet, select cell A1, and press CTRL+V.

 Important   For the example to work properly, you must paste it into cell A1 of the worksheet.

  • To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

After you copy the example to a blank worksheet, you can adapt it to suit your needs.

Data Description
10% Annual interest
1 Period for which you want to find the interest
3 Years of loan
8000 Present value of loan
Formula Description (Result)
=IPMT(A2/12, A3, A4*12, A5 Interest due in the first month for a loan with the terms above (-66.67)
=IPMT(A2, 3, A4, A5) Interest due in the last year for a loan with the terms above, where payments are made yearly (-292.45)

Note The interest rate is divided by 12 to get a monthly rate. The years the money is paid out is multiplied by 12 to get the number of payments.

Applies to:
Excel 2007